[Users] error from RkHunter and ChkRootKit

Daniel Pittman daniel at rimspace.net
Tue May 8 08:12:37 EDT 2007

Markus Hardiyanto <informatics2k1 at yahoo.com> writes:

> I install RkHunter and ChkRootKit inside VE. the VE is using Centos
> 4.4 minimal installation. i download the Centos image from the list on
> OpenVZ Wiki.  here is the error that i got:
> from RkHunter:
> Performing 'known good' check...
> /bin/kill  [ BAD ]
> /sbin/insmod  [ BAD ]
> /sbin/lsmod  [ BAD ]
> /sbin/modprobe  [ BAD ]
> /usr/bin/file  [ BAD ]


> is this false positives??

Yes and no -- those are modified from the standard packages you would
have in a normal system, but the modification is to be expected with
OpenVZ.  Er, except maybe the /usr/bin/file binary...

> from ChkRootKit:
> Checking `lkm'... You have    74 process hidden for readdir command
> chkproc: Warning: Possible LKM Trojan installed

Again, probably expected: the proc file system within the VE isn't
identical to a physical system.

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